Wire & PCB Connectors

Wire & PCB (Printed Circuit Board) connectors are essential for linking boards, wires, and subsystems into complete assemblies. From high-density headers and FFC (Flexible Flat Cable) interconnects to rugged backplane and card edge designs, these connectors form the backbone of electronic builds.

At Online Components, we offer more than 1.6 million wire & PCB connectors from 120+ authorized suppliers, including TE Connectivity, Phoenix Contact, Amphenol, and Samtec. With U.S.-based inventory, fast shipping, and competitive pricing, you can source confidently whether you’re building prototypes or scaling production.

How to Choose the Right Wire & PCB Connector

Electrical & Mechanical Requirements

Start with current, voltage, and pitch. High-density headers support compact layouts; larger-pitch blocks allow higher currents and easier field wiring.

Mounting & Orientation

PCB connectors come in through-hole (THT) for mechanical strength, or surface-mount (SMD) for automated assembly. For field wiring, terminal blocks and IDC connectors reduce install time.

Durability & Serviceability

Consider mating cycles, locking mechanisms, and insulation ratings. Production environments and harsh conditions may require reinforced housings, polarization, or strain relief.

Popular Applications for Wire & PCB Connectors

• Consumer & Embedded Electronics: Board-to-board headers, sockets, and micro-pitch connectors in handhelds, wearables, and computing modules.
• Industrial Controls & Automation: Terminal blocks and IDC connectors in PLCs, HMIs, motor drives, and factory wiring panels.
• Automotive Electronics: Vibration-tolerant board connectors in infotainment, lighting, and control modules.
• Medical & Instrumentation: High-reliability board interconnects in analyzers, monitoring devices, and lab systems.
• Telecom & Networking Gear: Backplane, mezzanine, and high-density headers for routers, switches, and base stations.

Why Buy Wire & PCB Connectors from Online Components?

• Authorized Distributor Since 1999: Genuine, traceable supply chains.
• Extensive Selection: 400,000+ part numbers in stock, ready to ship.
• Fast Fulfillment: Same-day U.S. shipping with flat-rate global delivery.
• Competitive Pricing: Screen pricing and low MOQs to match prototyping or production needs.
• Easy Procurement: Search by part number, specs, or supplier to streamline purchasing.

Wire & PCB Connectors: What to Know

How do I reduce risk when qualifying alternate connectors for production?

Always compare datasheets for pin pitch, plating, housing material, and mating compatibility. Even standard formats (headers, sockets, card edge) can vary slightly by manufacturer. Testing alternates during prototyping prevents costly redesigns later.

What packaging formats are available for wire & PCB connectors?

Depending on your assembly process, connectors may come in trays, reels, tubes, or bulk. For high-speed SMT (Surface-Mount Technology) lines, tape-and-reel packaging improves throughput. For manual or service assembly, trays or bulk are often more practical.

Which connector types are most common in high-density PCB layouts?

Micro-pitch headers, mezzanine board-to-board connectors, and FFC/FPC (Flexible Flat Cable/Flexible Printed Circuit) connectors are frequently used. They balance space savings with electrical performance, but require precise placement during PCB design.

How should I plan for high-vibration environments?

Select connectors with locking features, polarization, and reinforced housings. Automotive and industrial-rated parts often meet these requirements. Checking vibration and shock test data in the manufacturer’s spec sheets ensures long-term reliability.